Driven wheel.



J. T. MOORE & W. J. FLEMING.

DRIVEN WHEEL.

APPLICATION FILED AUG. 11,1908.

Patented Dec. 8, 1908.

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APPLICATION FILED AUG.

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O S VMF d m MW A TTORNE YS UNITED STATES PATENT oEEIoE.

JOHN T. MOORE AND WlLLIAM J. FLEMING, OF EVANSVILLE, INDIANA.

DRIVEN WHEEL.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed August 11, 1908. Serial No. 447,970.-

To all whom it may concern:

Be it known that we, JOHN T. MooRE and WIBLIAM J. FLEMING, citizens of the United States, and residents. of Evansville, in the county of Vanderburgand State of Indiana, have invented certain new and useful Improvements in Driven Wheels, of which the following is a specification.

Our invention is an improvement in driven wheels, and consists in certain novel constructions and combinations of parts hereinafter described and claimed.

The object of the invention is to provide I a driven wheel, wherein the momentum of the driving wheel will, at all times, when in action, predominate overthe momentum of the driven wheel, and the improved Wheel is especially ada ted for use as the driven wheel of a banrf machine, but may be used in .any loose pulley where a minimum momentum is desired.

Referring to the drawings forming a part hereof, Figure 1 is a side view of a band sawing machine provided with our improved wheel. Fig. 2 is a detail perspective view of a portion of t l1e rim of the wheel. Fig. 3 is a side viewof the wheel, parts thereof being broken away, and Fig. 4 is a section on theline 4- 4 ofFig. 3.

The present embodiment of the invention is shown applied to a band sawing machine 1 of usual construction, wherein the driving Wheel 2 and the driven wheel 3 are connected by a band saw 4, the driven wheel 3 receiving its motion from the driving Wheel 2, by means of the band saw 4.

The improved wheel as shown in Figs. 2, 3, and 4, comprises a hub 5, connected by spokes 6, with a rim 7, which rim is provided on its peripheral surface with, a plurality of annular grooves 9 and 9, the grooves bein arranged near the side edges of the periphera surface as shown in Fig. 2. The tire 8 is annular in form, and is provided on its inner surface with annular grooves 11, cooperating with the grooves 9, 9, to form ball races, in which are received a plurality of balls 13. Annular side plates 14, 15 are provided which are secured to the rim by screws 16, the side plates stop ing short of the eripheral surface of tlge tire, as shown in Fig. 4, and the tire is shouldered as at 8' for-min recesses for receiving the eripheraled es 0 the side plates. Each si e surface 0 the tire is provided with an annular groove 25,

saw or band knife which cooperates with anannular groove .26on the ad'acent side plate, to form a ball race, in whic is received a plurality of balls 27. By removing the-block 20 and the plate 21, the balls 13 may be inserted or removed from the ball race, and when the block and plate are replaced, and the side plates 15 fastened to t e rim, the balls are retained securely in their race.

In band sawing machines, should the momentum of the driven wheel for any reason predominate over the momentum of the driving wheel, the band saw or knife will buckle or kink and the difference in momentum may be brought about by any means causing an irregular running of the driving wheel.

It will be evident from the description, that the weight of a driven wheel construct ed in accordance with our improvement may be greatly lessened, since the actual weight to be propelled by the driving wheel is the weight 0 the tire. Side motion of the driven wheel is also eliminated, the said side motion being objectionable since it causes irregular wear of the shaft or boxing.- Since the driven wheel follows so closely the motion of the drivin wheel, the saw or knife blade will at all times be rigid as it passes through the material to be cut. The danger to the operator is also greatly lessened since there is less liability of bursting of the driven wheel, nor are there spokes tocatch the blade when broken, and since there is a minimum of momentum of the tire, the broken blade or broken tire would not be thrown with any reat force. The strain on the saw or knife b ade is also greatly reduced, since all irregular strain is eliminated, and since side motion is eliminated, the blade will stretch evenly thus lengthening the life i of the same.

We claim:

1. A driven wheel com vided on its peripheral an annular grooves, and a tire provided on its inner surface with annular grooves, ating with the peripheral grooves of the rim to form ball races, balls in the races, said rim being provided with recesses extending to the peripheral surface thereof, and transversely of the ooves, blocks fitting within the recesses an provided on their outer surfaces with a groove registering, with the adjacent annular groove of the rim, and anrising a -rim pronular side-plates secured to the rim and enside surfaces with coopergaging the side surface of the tire, said plates and communicating with the grooves, blocks having annular grooves cooperating with the fitting within the recesses, and annular side rooves on the side surfaces of the rim to orm ball races, and balls in the races.

5 2. A driven Wheel comprising ahub and 2.

Connected rim, a tire on the rim, the adjacent faces of the tire and rim being grooved to provide ballraces, balls Within the races, said rim being provided with recesses ex- 10 tending to the peripheral surface thereof, I

plates secured to the rim and engaging the side surfacesof the tire.

Witnesses:

EDWARD 0. JARVIS, JAMES G. SPALDING. 

